1 files changed, 10 insertions, 9 deletions

diff --git a/drivers/net/greth.c b/drivers/net/greth.c
index b307696e0f63..869e38d6f41b 100644
--- a/drivers/net/greth.c
+++ b/drivers/net/greth.c
@@ -503,7 +503,7 @@ greth_start_xmit_gbit(struct sk_buff *skb, struct net_device *dev)
                 greth->tx_skbuff[curr_tx] = NULL;
                 bdp = greth->tx_bd_base + curr_tx;
 
-                status = GRETH_TXBD_CSALL;
+                status = GRETH_TXBD_CSALL | GRETH_BD_EN;
                 status |= frag->size & GRETH_BD_LEN;
 
                 /* Wrap around descriptor ring */
@@ -540,26 +540,27 @@ greth_start_xmit_gbit(struct sk_buff *skb, struct net_device *dev)
 
         wmb();
 
-        /* Enable the descriptors that we configured ...  */
-        for (i = 0; i < nr_frags + 1; i++) {
-                bdp = greth->tx_bd_base + greth->tx_next;
-                greth_write_bd(&bdp->stat, greth_read_bd(&bdp->stat) | GRETH_BD_EN);
-                greth->tx_next = NEXT_TX(greth->tx_next);
-                greth->tx_free--;
-        }
+        /* Enable the descriptor chain by enabling the first descriptor */
+        bdp = greth->tx_bd_base + greth->tx_next;
+        greth_write_bd(&bdp->stat, greth_read_bd(&bdp->stat) | GRETH_BD_EN);
+        greth->tx_next = curr_tx;
+        greth->tx_free -= nr_frags + 1;
+
+        wmb();
 
         greth_enable_tx(greth);
 
         return NETDEV_TX_OK;
 
 frag_map_error:
-        /* Unmap SKB mappings that succeeded */
+        /* Unmap SKB mappings that succeeded and disable descriptor */
         for (i = 0; greth->tx_next + i != curr_tx; i++) {
                 bdp = greth->tx_bd_base + greth->tx_next + i;
                 dma_unmap_single(greth->dev,
                                  greth_read_bd(&bdp->addr),
                                  greth_read_bd(&bdp->stat) & GRETH_BD_LEN,
                                  DMA_TO_DEVICE);
+                greth_write_bd(&bdp->stat, 0);
         }
 map_error:
         if (net_ratelimit())